watchOS 4.1

watchOS

Version

4.1

Build ID

15R5843a

File Size

155.65 MB

Release Date

2017-10-16T17:06:06Z

Update Type

Normal release

Delta update - requires 4.0 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 1 (42mm) →

About This Update

watchOS 4.1 (build 15R5843a) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2017-10-16T17:06:06Z. The update package is 155.65 MB. This is a delta (partial) update that requires 4.0 to already be installed on the device - it cannot be applied from scratch. This update is no longer signed by Apple, meaning it can no longer be downloaded and applied on-device through Settings.

The OTA payload file is 1bf8ddbfc26d1378104b7c9cdb6a95423f05d9c5.zip.

Direct URL

http://appldnld.apple.com/watchos4.1seeds/091-38816-20171016-D45AF786-AF8C-11E7-ABA3-E01DBDA7E146/com_apple_MobileAsset_SoftwareUpdate/1bf8ddbfc26d1378104b7c9cdb6a95423f05d9c5.zip